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2. United States v. Huck Mfg. Co. - Wikipedia

   en.wikipedia.org/wiki/United_States_v._Huck_Mfg._Co.

   A lockbolt is a two-part metal fastening device used to join together permanently two or more pieces of metal. They are used in the manufacture of aircraft, and also ships, railroad cars, and other vehicles. Huck owns United States Patents Nos. 2,531,048 and 2,531,049 on lockbolts, invented by Louis Huck, issued in 1950.

3. Metal roof - Wikipedia

   en.wikipedia.org/wiki/Metal_roof

   Standing seam metal roof. A metal roof is a roofing system featuring metal pieces or tiles exhibiting corrosion resistance, impermeability to water, and long life. It is a component of the building envelope. The metal pieces may be a covering on a structural, non-waterproof roof, or they could be self-supporting sheets.

4. Screw - Wikipedia

   en.wikipedia.org/wiki/Screw

   A lathe of 1871, equipped with leadscrew and change gears for single-point screw-cutting A Brown & Sharpe single-spindle screw machine. Fasteners had become widespread involving concepts such as dowels and pins, wedging, mortises and tenons, dovetails, nailing (with or without clenching the nail ends), forge welding, and many kinds of binding with cord made of leather or fiber, using many ...

5. List of screw and bolt types - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_and_bolt_types

   Sheet metal screws make excellent fasteners for attaching metal hardware to wood because the fully threaded shank provides good retention in wood. Twinfast screw A Twinfast screw is a type of screw with two threads (i.e. a twin-start screw ), so that it can be driven twice as fast as a normal (i.e. single-start) screw with the same pitch. [ 4 ]

6. Bolt (fastener) - Wikipedia

   en.wikipedia.org/wiki/Bolt_(fastener)

   Hanger bolt - Bolt that has no head, machine threaded body followed by a wood threaded screw tip. Allow nuts to be attached to what is really a screw. Hex bolt - Bolt with a hexagonal head and threaded shank. Section immediately under head may be unthreaded for fastening thicker materials. J bolt - Bolt shaped like the letter J, used for tie downs.

7. Planters illegally bolted to an L.A. street to deter RV ...

   www.aol.com/news/did-home-depot-staff-bolt...

   The planters were bolted to the city streets in Playa Vista behind a Home Depot in an area popular with people who live in their vehicles.